The Danish military that took the "bubbles" video, should have dropped a flare. Then people could see the glow for miles.
My brother is a road construction foreman. Sometimes the natural gas distribution pipes are not where the MISS DIG paint marks are. I asked what do you then? He said, "Back away and light it. It's safer for the gas to burn in place, than to drift as a cloud and possibly ignite and explode from a pilot light in a nearby house. Plus everyone calls 911 screaming bloody murder and the natural gas workers respond a lot quicker!"
